Planktonic foraminiferal abundances and stable isotope ratios in middle Miocene sediments of the North Atlantic and the southwestern Pacific, supplement to: Ohta, Satoshi; Kaiho, Kunio; Takei, Tomohiro (2003): Relationship between surface-water temperature and ice-sheet expansion during the middle Miocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 201(3-4), 307-320

Satoshi Ohta, Kunio Kaiho & Tomohiro Takei
A three-fold expansion of the Antarctic ice sheet at 13.60, 12.82, and 11.60 Ma has been inferred from delta18O maxima analyzed in planktonic and benthic foraminiferal tests, although accompanying changes in sea surface temperature have not been detailed. We present estimated changes in middle Miocene surface-water temperatures based on analysis of delta18O in planktonic foraminifera collected at mid-latitude Deep Sea Drilling Project sites in the North Atlantic and South Pacific oceans. We also identify periods...
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